Device for heating and vaporizing liquids.



G. L. PREINS'LER. v DEVICE FOR HEATING AND VAPOBIZING LIQUIDS. APPLICATION FILED DEC. 12, 1918.

1,103,830. Patented July 14,1914.

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G. L. PREINSLER.

DEVICE FOR HEATING AND VAPORIZING LIQUIDS.

APPLICATION FILED D110. 12, 19131 Patented July 14,1914.

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CHARLES LUGIEN PREINSLEB 0F RHEIMS,

Enhance.

DEVICE FOR HEATING AND VAPORIZING- LIQUIDS. i

To all whom it may concern Be it known that I, CHARLES Locum PREINSLER, a citizen of the Republic of France, and a resident of No. 12 Rue Ruinart de Brimont, Rheims, Department of Marne, France, have invented new and useful Improvements in Devices for Heating, and Vaporizing Liquids, of which the following is a specification.

The invention relates to an improvement in open or closed receptacles adapted for the heating or vaporization of liquids.

The accompanying drawing illustrates several embodiments of the invention.

Figure 1 is a vertical section through a receptacle of a known kind. Fig. 2 is a plan of Fig. 1. Fig. 3 is a vertical section through a receptacle constructed in accordance with the invention. Fig. L is a plan of Fig. 3. Fig. 5 is a vertical section through a second embodiment of a receptacle constructed in accordance with the invention, and Fig. 6is a plan of Fig. 5. Figs. 7-12 show further embodiments of receptacles which serve for the heating or vaporization of liquids only. Fig. 13 is a vertical section, and Fig. 14L a longitudinal section through a further modification of my invention.

If a liquid contained in a receptacle a (Figs. 1 and 2) is subjected to the action of a source of heat 6 then, on the assumption that the whole surface of the bottom of receptacle is heated, convection movements of the liquid particles are produced which take place in the direction indicated by the arrow w. Experience has taught that the whole liquid mass, moves about an imaginary cylinder 0 in such a manner that the cross-sectional area of the annular space between the cylinders a and c, is equivalent to that of the cylinder 0. It follows therefromthat the circulation of the liquid at the points (Z, (Z, d of the receptacle is very weak and that deposits or other sediments tend to accumulate at these points. These occurrences which are well known, take place in exactly the same manner in commercial constructed in this manner,

Specification of Letters Patent. I Patentgd July 14 1914, Application filed December 12 1913. Serial No. 806,309.

steam generators and are very often the cause of deposits which give rise to terrible accldents.

The purpose of the invention is to eliminate this drawback.

It consists in constructing the liquid receptacle in such a manner that the whole llquid mass which comes into contact with the heated surfaces, is set into motion during the heating at a speed which is equal at all points. This result can be obtained, for example, by a special construction of the liquid receptacle, preferably by providing an inner partition which is so arrangedthat the deposits accumulate at a point where they can be readily cause any danger.

The characteristic construction of the receptacle in accordance with the invention is shown in Figs. indenting the-spherical bottom 6 of a cylinder 6 in such a manner that the lowermost point e toward 6 7 located in the plane 6 of the spherical cap 6 and that the two semi-circles 0 e which appear in any diametral vertical section through the cap 6 (Fig. 3) have their centers located in the plane 0 Briefly, the bottom of the receptacle presents the form of the lower half of a axis, the generating circle of which is tangential to the axis of rotation.

The arrangement can be still further com- 3 and L. It is formed by of the bottom is shifted upward and the point 0 thus produced isv collected and cannot torus with a vertical I pleted by providing within the receptacle (Figs. 5 and 6) which consists of two concentric cylinders f and 7" connected, at their lower ends, by a halftorus f so thatthe annular cross-sectional area 9 between the cylinders f and e, is equal to the cross-sectional area of the cylinder f. If such a receptacle is filled with liquid, and heated from the exterior, a rapid circulating movement of the liquid is produced in the. direction indicated by the arrows. of this movement is constant from the inlet opening of the cylinder 7 to the outlet from a partition,

The rapidity area of this course throughout.

the partition the cylinder the annular space 9, as the cross-sectional 0f the liquid is equal After leaving the annular space r the velocity of the liqulu diminishes according as the cross-section of the passage increases and the deposits which have been carried away therewith accumulate at h,

it wherefrom they canbe easily removed. It will be thus seen that the velocity of the liquid remains constant during thet'imeit moves along the heated surfaces and that the deposits are out of faces that is to say they accumulate ata point where they cannot cause any danger. It will be seen further that all parts of the receptacle are easily accessible and can be completely cleansed.

The distance between the cylinder 6 and f may be insured preferably by stays or the like which are soldered either on cor on the partition 7'' only,-in such a manner that the said partition'may be readily removed without any difliculty. The device in accordance with invention is also applicable to boiling pans, see Figs. 7

, and 8, and to washing coppers, Fig. 9.

The constructions described above show round shapes. The invention may also be embodied in elongated structures of generally rectangular outline such as shown in Fig. 10 and in which a transverse vertical section at any point corresponds to the diametral vertical section through the tubular construction (Fig. 5 for instance). These constructions have the same advantages as that described hereinbefore and can be utilized'in cases where a long heating receptacle is required such as insertion of boilers for kitchen ranges.

, In the adaptation of the invention to commercial boilers, or to operating apparatus in general in which the boilers sure, the conical point e is supported by a boltz' (Fig. 11 the threaded end of which is engaged by a nut a" above the top of the are under presboiler. f It is advantageous to replace the bolt by a hollow tube 2' (Fig. 13) through which the gases of combustion may be passed thus augmenting the heating surface.

When a longer heating surface is requisite,

, a number of heating elements analogous to to form a those shown in Figs. 11 and 13 may .begrouped together as shown 1n Figs. 12 and 14, and in these constructions, main Hues 7c are provided.

e If the necessary heating surface is large, itis possible to group a suitable number of elements similar to these shown in Fig.11 generator as shown in Fig. 12 7a, 72 being the flame or smoke tubes.

g The elements of this generator may, more- Over, be joined into an oblong form as contact with these sur-- formed, I declare that having a bottom centrally. recessed shown in Fig. 10; in the latter case the point 6 forms an edge which is connected to the cover of the boiler by means of a series of stays.

Briefly the device in accordance with the invention solves in a practical manner, the problem which'the engineer has set himself since along time, namely to realize a vaporizing apparatus built up from U-shaped tubes of constant area, the returns of which are not heated.

It is evident that the invention is not restricted to the construction described hereinbefore, as it can be carried out in any manner based upon the principle of the invention. a j

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be perwhat I claim is 1. A tubular container'for heating liquids substantially as described, in combination with partitioning arranged therein and com-prising a tubular member inwardly recurved at its lower end to form an. inner tubular passageway spaced from the outer walls thereof, the

latter being arrangedwithin the tubular con tainer and spaced therefrom to afford a circulatory passage between the same, said passageway corresponding substantially in.

cross sectional area to that of the inner tubular passageway. I

2. A tubular container'for heating convex bottom. centrally recurved substanmcombination wlth a tially as described, coverv for said container and a stay bolt extending between said cover and the central recurved portion ofthe bottom, for the purpose described. r

' 4-.- In a container. for heating liquids, a

' convex bottom centrally recurved substantially as described, in combination with a cover for said containerand. a hollow stay bolt extending between said cover and the central'recurved portion. of the bottom to permit the combustion gases to pass therethrough and thus lncrease the heating surface of the container.

v liquidshaving a bottom centrally recessed substan- 5. A multi-unit boiler for liquids, comprising a plurality of heating units each comprising a liquid. container having internal partitioning Which forms inner and outer communicating circulatory channels of substantially equal cross sectional area, said units being spaced apart together With fiues arranged in extension of said spaces between the heating units to permit the flow of the Copies of this patent may be obtained for gases of combustion therethrough, substan- 10 tially as described.

In testlmony whereof I hate signed my name to this specification in the presence of tWO subscribing Witnesses.

iive cents each, by addressing the "Commissioner of Patenh,

Washington, D. 0. 

